More weight is given to the face than the body when considering a long-term relationship.
Researchers showed men and women pictures of the opposite sex in rotating sets. Sometimes the study participants saw just head shots, sometimes just body shots, and sometimes both right next to each other. After a complicated set of calculations, the researchers were able to determine that while each physical trait contributes to overall suitability for a long-term relationship, the face is more important to both men and women.
With men, this flips when they were asked to rate the pictures for a short-term relationship.
Of course, to really get an accurate account of what men look for in a short-term relationship, researchers should first get the study’s participants drunk..